Probably a good company for permanent employees, but temporary workers get shafted.
Pros
The pay is decent and, if you can get a permanent role, there seems to be great job security. I've also heard the benefits are consistent with a larger company (medical options, retirement savings, paid time off). I hear Abbott is a good company to work for, just not Abbott Diabetes.
Cons
You are a drone in a very large cog. My role was very specialized, which got boring. My manager was awful and, despite bad reviews year after year, will never be let go. The company hires temporary employees for a good portion of the positions, and will often keep them for 2 years. After two years, the employee is required to take a 30 day unpaid leave before they can return to work. I'm surprised by how often this actually happens... why not just hire your employees on a permanent basis? Don't they want to retain their talent? The management team will also pass their projects on to the temp employees to complete, then pass the work off as their own.
